[MattEmily]

Other differences would include...

Zyuranger = Bandora had a reason for attacking the planet, because of her hatred for human kind however she hated children the most.
Rita had no reason other than she wanted to.

Dairanger = Zedd and his Putties did not exist in Dairanger, they had what Power Rangers would call Black Putties.

Kakuranger = This was a full season whereas the Alien Rangers were just in a mini series. Ninjazords, Shogunzords and Battle Borgs along with Ninjor actually came from this season though.
Ninjor was not a main figure in Sentai.
In Power Rangers, as we all know, the Rangers got the Ninjazords first and then the Shogunzords. The Battle Borgs were the Alien Rangers' zords.
In Kakuranger, it was the Shogunzords first, the Battle Borgs second, the Ninjazords third and the Falconzord last. The Falconzord did not have a pilot in Kakuranger.
The Cycles were not technically a difference since Kakuranger did have cycles as well but the ones Power Rangers had, their Shark Cycles were far different in design.

Rito was the evil leader until he was destroyed in Kakuranger and then Master Vile took over. They were also related much in the same way that they were related in Power Rangers as well.

Tengas did not exist, they had what Power Rangers would probably call as Blue Putties.

Ohranger = King Mondo never came back in Ohranger once the Super Zeo Megazord destroyed him.
Sprocket and Gasket were actually the same character in Ohranger.
Kingranger did have a henshin device but the Gold Ranger did not have a Zeonizer.

Carranger = P-trons and Putrid Pods are original. The Japanese counterpart to Divatox was technically the leader but I think Rygog's counterpart took command a lot more often until Havoc's counterpart came around. I believe Goldgolye's counterpart was the overall leader.

Megaranger = Quantrons was a difference. Andros' Battlizer Power-Up was another difference. Astronema was just there to be her American counterpart to the Japanese character but Astronema as we all know is actually the leader. In Megaranger, the female is not the leader... in fact it's actually Dr. Hinelar who is the leader.
Silver Ranger's Galactic Rover is also another difference.

Gingaman = Leo's Battlizer Power-Up is a difference as are the Stingwingers. Scorpius is also a difference since Captain Mutiny and his crew were the villains in Gingaman but without a Furio since Furio was Dr. Hinelar's Monster Form from Megaranger.
Astro Cycles and Jet Jammers were also differences as well as the themes.
Gingaman had a forest/Earth theme while Galaxy was doing a Space theme.

GoGoV = Not a whole lot of differences. Cycles were a big difference since only Red had one in GoGoV. Vypra's counterpart also didn't have her Vyprari in GoGoV. Joel, Chad and Carter also did not have their power-ups.
There was no Titanium Ranger since GoGoV was only meant to be a team of 5 Rangers.
Max Solarzord was a zord that was basically a robot but was capable of human speech.
Once Diabolico was destroyed in GoGoV, he was destroyed for good, he did not return.
The bases were different. In Power Rangers, it was a high-tech base that was underwater. In GoGoV, it was neither.

Timeranger = TimeFire died in Timeranger. Quantum didn't.
Vector Cycles, Strata Cycle and TF Eagle was a difference.
Wes' Battle Fire Armor and Eric's Mega Battle was also a difference since they didn't exist.
Don (Gluto's counterpart) was the evil leader in Timeranger but they used some of his stories as their stories for Ransik.
Captain Ryouga (Alex's counterpart) was more devious since he allowed time changes to happen as they occurred except he sent them their zords when he wasn't supposed to since they were supposed to die then but he altered the timeline in order to change that. In Timeranger, he was also the one responsible for sending the Morpher and Q-Rex back in time so that a modern day human (Naoto in Timeranger) would find it and end up dying since he knew that regardless of the timeline, he was meant to die as TimeFire/Quantum Ranger but he didn't want that to happen.

Gaoranger = Only Merrick had a Cycle in Gaoranger. Cole's Battlizer was also a difference since GaoRed didn't have one in Gaoranger.
There was no Master Org in Gaoranger, in reality it was just a myth, a hoax since the Master Org was just a symbol of the combination of power between the 3 Highness Dukes, who we know as the 3 Org Generals, those being Retinax, Nayzor and Mandilok.